exam questions

• Explain how breeding programmes in zoos maintain the genetic diversity of captive populations (3) 

  -       Animals are selected to prevent breeding of closely related animals (inbreeding depression)

  -       A stud book is used to select individuals for mating and keep a record of all breeding events 

  -       Exchange of animals between zoos 
• State suitable conditions for keeping seeds in a seed bank (2) 

  -       Dry and cold (20 degrees or below)

  • steralise seeds
• Explain the advantages of drying seeds before storage (2) 

  -       Extends storage time of seems 

  -       Because dying prevents germination prevents the growth of bacteria and fungi
• Justify the benefits of conserving seeds (3) 

  -       Prevent species becoming extinct 

  -       Conserving species with potential medicinal properties 

  -       Conserve genetic diversity 

  -       Allows for the reintroduction of species in the future.
• Describe the roles that zoos play in animal conservation (3) 

  -       They play are role in protection- from hunting/poachers 

  -       Play a role in repopulation-increase numbers via breeding programmes 

  -       Play a role in education- about endangered species and conservation 

  -       Play a role in research- by discovering better nutrition or improving health
• Describe how the proposed conservation programme could prevent the Scottish wildcat from becoming extinct (4)

  -       Use of studbooks/selection of mates 

  -       To increase the number of Scottish wildcats 

  -       Prepared for reintroduction to native habitat.
• Explain the advantages of these two stages. 

  -       Washing the seeds with disinfectant- removes any bacteria/ pathogens to prevent disease

  -       Drying to reduce chance of germination 

  -       Therefore, preventing decay/damage to seeds- for long term storage